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Transmitting an analog Gaussian source over a Gaussian wiretap channel under SNR mismatch

2009/08/15 by Makesh Pravin Wilson, Wilson, Makesh Pravin, Krishna R. Narayanan +2
Biochemistry, Genetics and Molecular Biology · Computer Science · Engineering · Mathematics · #DNA and Biological Computing #FOS: Computer and information sciences #Information Theory (cs.IT) #Molecular Communication and Nanonetworks #Wireless Communication Security Techniques #cs.IT #math.IT

paper · pdf · doi:10.48550/arxiv.0908.2203

6 pages and 3 figures

arxiv created 2009/08/15 · openalex publication_date 2009/08/15 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

In this work we study encoding/decoding schemes for the transmission of a discrete time analog Gaussian source over a Gaussian wiretap channel. The intended receiver is assumed to have a certain minimum signal to noise ratio (SNR) and the eavesdropper is assumed to have a strictly lower SNR compared to the intended receiver. For a fixed information leakage to the eavesdropper, we are interested in minimizing the distortion in source reconstruction at the intended receiver, and we propose joint source channel coding (JSCC) schemes for this setup. For a fixed information leakage to the eavesdropper, we also show that the schemes considered give a graceful degradation of distortion with SNR under SNR mismatch, i.e., when the actual channel SNR is observed to be different from the design SNR.

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